Home / 781,280.21-1,177,776.17-729,200.03

Finding the Fourth Proportional to 781,280.21, 1,177,776.17 and 729,200.03

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Solution

The fourth proportional to 781,280.21, 1,177,776.17 and 729,200.03 is: 1,099,265.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,280.21 : 1,177,776.17 = 729,200.03 : x
  2. Step 2: Convert to fraction form
    781,280.21/1,177,776.17 = 729,200.03/x
  3. Step 3: Cross multiply
    781,280.21x = 1,177,776.17 × 729,200.03
  4. Step 4: Simplify right side
    781,280.21x = 858,834,418,497.29
  5. Step 5: Solve for x
    x = 858,834,418,497.29/781,280.21
  6. Step 6: Final answer
    x = 1,099,265.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.